Finish pullups for RC2.

#1498 Easily turning off/overriding default select and temporary intent
        styles
  #1501 GeoRSS format tests fail in Safari
  #1502 Events register method fails if listeners member is not an array
  #1503 panning off for odd-sized viewport
  #1504 doc review


git-svn-id: http://svn.openlayers.org/branches/openlayers/2.6@6835 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Feature.js

@@ -161,6 +161,10 @@ OpenLayers.Feature = OpenLayers.Class({
      *  
      *  If no 'lonlat' is set, returns null. 
      *  If no this.marker has been created, no anchor is sent.
+     *
+     *  Note - the returned popup object is 'owned' by the feature, so you
+     *      cannot use the popup's destroy method to discard the popup.
+     *      Instead, you must use the feature's destroyPopup
      * 
      *  Note - this.popup is set to return value
      *